# LIB2-120 — W01 declares the Planck-scale top-Yukawa attachment

- class: CLAIM · review_state: PUBLISHED · house_tier: not yet assigned
- labels as printed: math_status NOT_PRINTED · attachment NOT_PRINTED · scorecard tier word none (PDF p.140)
- basis: {"pdf_sha256_prefix": "b64ddcd9e16a6dcd", "release": "Rev33.1_S369"}

## Statement

Reading the carrier eigenvalue as yt(MPl) = 1 is the declared W01 attachment, requiring a physical Higgs direction, a scheme-specific coupling and an identification of the algebraic scale with MPl.

## Caution

This ultraviolet registration is not a proof of the physical coupling or its value after low-energy running and matching.

## Primary source

Appendix A, §A.6, W01: declared attachment, PDF p.145: "Reading that eigenvalue as the physical top Yukawa at the Planck scale, yt (MPl ) = 1, is a declared attachment, not a derivation:"

## Machine

- url: /library-v2/LIB2-120/
- content_sha256: 3a3d76024012e41008ad44c4d7635fbd4e7fa9d3bf2982069b6cfc731704f29c
- candidate_ids: C2-016

## Freshness

- BUILD_STAMP S371a · 2026-09-26T22:53Z · master 01d1a5873ede42f5 · cut 9dcc6ce9a8ee3e02
- Declared volatile fields (R36): BUILD_STAMP